drm/amdgpu: change Raven always on CUs to 4

For Vega10 and Vega20, the always on CUs are 12.
For Raven, it's 4.

Signed-off-by: Evan Quan <evan.quan@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
1 file changed